edhseer Commander synergy, explained
Creature — Spider Spirit
Mana cost: {2}{G}
Reach
Whenever another nontoken creature you control dies, you may reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.
triggered — searches a library
Causes: nothing.
Cares about: a nontoken creature dies.
a Spider enters the battlefield — 206 cards in the game can cause this (Spinner of Souls is one).
a Spider creature it grants types to — 207 cards in the game can cause this.
206 other cards cause it too. These are the ones with the most connections.
a nontoken Spirit deals combat damage — 725 cards in the game can cause this (Spinner of Souls is one).
a nontoken Spirit enters the battlefield — 727 cards in the game can cause this (Spinner of Souls is one).
a Spirit enters the battlefield — 863 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls enters:
a Spirit creature it boosts — 889 cards in the game can cause this.
888 other cards cause it too. These are the ones with the most connections.
anything attacks — 17,934 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls attacks:
111 other cards care about it too. These are the ones with the most connections.
a creature attacks — 17,934 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls attacks:
180 other cards care about it too. These are the ones with the most connections.
a creature blocks — 17,934 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls blocks:
18 other cards care about it too. These are the ones with the most connections.
a nontoken creature attacks — 17,934 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls attacks:
a creature deals combat damage — 17,934 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls deals combat damage:
194 other cards care about it too. These are the ones with the most connections.
a creature is cast — 18,010 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls is cast:
81 other cards care about it too. These are the ones with the most connections.
a creature enters the battlefield — 19,800 cards in the game can cause this (Spinner of Souls is one).
When Spinner of Souls enters:
301 other cards care about it too. These are the ones with the most connections.
anything enters the battlefield — 26,499 cards in the game can cause this (Spinner of Souls is one).
40 other cards care about it too. These are the ones with the most connections.